The development of eco-friendly lubricant is the requirement of the times. In this paper, the modified IF-WS₂ nanoparticles are added to castor oil as additives to prepare mixed lubricant. The lubrication performances of the mixed oil are investigated by ball-on-disc rotary friction tester, and then the surface scratches are characterized by depth of field digital microscope, scanning electron microscope and Raman spectrometer. Experiments reveal that compared with the base oil, the friction coefficient and worn volume decrease by 27.4% and 47.2% after adding modified IF-WS₂ as additives under 300 rpm and 5 N conditions, respectively. From mechanism analysis, this improvement in lubrication performance is attributed to the polarity of castor oil and the unique pressure bearing structure and dispersion stability of modified IF-WS₂, which makes that the castor oil molecules can better adsorb around the modified IF-WS₂ to form heavy loading bearing friction oil film so as to reduce friction and wear. In summary, results indicate the mixture of modified IF-WS₂ nanoparticles and vegetable lubricating oil has an attractive prospect in the field of environmentally-friendly products.

发展环保润滑油是时代要求。本文将改性的IF-WS ₂纳米颗粒作为添加剂加入蓖麻油中制备混合润滑剂。采用球盘式旋转摩擦试验机对混合油的润滑性能进行研究，然后采用景深数码显微镜、扫描电子显微镜和拉曼光谱仪对表面划痕进行表征。实验表明，加入改性IF-WS ₂后，与基础油相比，摩擦系数和磨损量分别降低了27.4%和47.2%分别在 300 rpm 和 5 N 条件下作为添加剂。从机理分析，这种润滑性能的提高归功于蓖麻油的极性和改性IF-WS ₂独特的承压结构和分散稳定性，使蓖麻油分子能够更好地吸附在改性IF-WS ₂周围形成重载轴承摩擦油膜，以减少摩擦和磨损。总之，结果表明改性IF-WS ₂纳米颗粒与植物润滑油的混合物在环保产品领域具有诱人的前景。